US 12,222,526 B2
Mid-air image display device and method of operating the same
Vladimir Nikolayevich Borisov, Saint Petersburg (RU); Svetlana Vladimirovna Danilova, Sergiev Posad (RU); Ilia Valer'evich Malyshev, Vsevolzhskiy District (RU); Nikolay Victorovich Muravev, Podolsk (RU); Mikhail Vyacheslavovich Popov, Krasnogorsk (RU); Stanislav Aleksandrovich Shtykov, Moscow (RU); and Alexander Alekseyevich Aspidov, Moscow (RU)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Dec. 6, 2021, as Appl. No. 17/543,356.
Claims priority of application No. 2020139967 (RU), filed on Dec. 4, 2020; and application No. 10-2021-0156052 (KR), filed on Nov. 12, 2021.
Prior Publication US 2022/0179233 A1, Jun. 9, 2022
Int. Cl. G02B 30/56 (2020.01); G02B 27/10 (2006.01)
CPC G02B 30/56 (2020.01) [G02B 27/106 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A mid-air image display device comprising:
a projection system configured to output a light beam for an image;
at least one positive lens; and
a light multiplication module comprising a first transmission grating, a second transmission grating, a waveguide and a reflection grating, and configured to receive the light beam from the projection system and transmit the received light beam through the first transmission grating, the second transmission grating, the waveguide and the reflection grating,
wherein the at least one positive lens is disposed on the light multiplication module, and configured to receive the light beam transmitted through the light multiplication module to form a mid-air image.